Time-fuse.



QBKKER. TIME FUSE.

APPLIOATION FILED MAR. 26, 1906.

- PATENTED MAY 28, 1907.

- ing shaft.

its free end f bent upwardly, while a spring -'1 Be it knowirthat L'CARLBAKER, a subject of Berlin, Germany, have invented certain.

CARL} BAKER, or en it nv, E MANY; assicxoii To FK-nan. KRUPP" 1'AKTIENGESEhhSCHAFT, or ESSEX-QQI-fllilQ-RUI-Ilt,GERMANX.

' ,1] ;y hmsgmsei1" of the Emperor of Germany, anda resident new anduseful Improvements inTime-F uses, of which the following is aspecification.

The present invention relates to timefuses with clock-work. timingmechanism, and particularly 'to fuses of this type, in which a springcarrying the firing pin is held under tension through the medium of alock-- The object of the invention is to provide transport safetyattachment, or device for securing the fuse against action during trans-)ortation, of simple and reliable construcion. v r

Primarily the invention consists in providing a clock-work or othermotor time fuse witha safety device, exercising a dual control over thefiring means, by providing independent connections through which itopposes the action of both the clock-work and the locking shaft, untilthe safety device is automatically withdrawn by'the act of firing.

In the accompanying drawing, in which the invention is shown, by way ofexample, as applied to the fuse forming the subject matter of U. S.Letters Patent 728,151, granted May 12, 1903, to Carl Baker, Figure l isa vertical section through the secured fuse; Fig. 2 is a top view of thefuse mechanism; Fig. 3 is a section on line 33, Fig. 1, seen from above,and Fig. 4 is a part of the fuse with withdrawn securing device.

The total construction, and mode of operation of the fuse is known andwill, therefore be but briefly referred to as follows: The spindle A- ofthe clock-work, whose driving mechanism (not shown) is arranged in thecasing B, is engaged by a spiral spring C (Fig. l), which, when undertension, tends to turn the spindle A in the direction of the arrow m(Fig. 3). The locking shaft D provided with a shoulder (Z, holds-thefiring spring E under tension until the tune for ignition has arrivedwhen it releases said spring E with its firing pin 6, to ignite thefuse. A locking lever F, which is arranged on the shaft D, has

(Fig. 2) tends to turn the lever F and the shaft D in the-direction ofthe arrow 1 (Fig.

i Specification of Letters Patent. 7 i v Applieation'iiled arch 26,1906;Serial No. 308,165.

3), to bring the shaft D in the position in ra sed my 25 199 which theshoulder (if releases the j firing spring E. Spindle A carries alockingdisk G (Figs. 1' and-2), adjustable through the medium of thecapH(Fig; 1) andisprovided with a notch {1' adapted to receive the endf ofthe locking lever.

A bolt; ;\l is mounted int-he plates J K of the ClOCli-WOlk, through themedium of trunnions 111. m in suclra manner that when a projectile isfired, the bolt will more under its own inertia from the position shownin Figs. 1 and 3 to the position shown in Fig. 4, while a bifurcatedspring X having arms 'nn (Fig. 3), embraces the tapered neck m of saidbolt M, when the latter is in the position shown in Figs. 1 and 3. Thisbolt is brought into independent opposing relation to both theclock-work and the locking shaft, by the following means: In the lastmentioned position of the bolt, the head is situated in the path oftravel of two arms (1 and d" one of which ((4') is rigidly connected tothe spindle (Fi s. 1 to 3 I the s )rin 's and Bare under tension and thearms a and (F lie against the head m of the bolt M so that the bolt andthe arms a, (P, both prevent the starting oi the clock-workand theturning of locking shaft D that 1s necessary to release the liringspring E. 'If the locking shaft were not secured against turning in thedirection of the arrow 1 such turning might for instance take placewhen, upon adjusting the time of ignition, the notch g in the lockingdisk G were moved into the path of travel of'the endf, of the lockinglever. Vhen the projectile is iired, the head m, of the bolt .M forcesthe arm n and 2/ of the spring N apart and the bolt moves into positionshown in Fig. 4. in which the securing device is withdrawn. 'lheclock-work starts ainlcarries alongwith it the locking disk G throughthe medium of the-spindle \Vhen the adjusted time of ignition hasexpired, theendj" of the locking lever passes through the notch g in-lhelocking disk thereby releasing the firing spring la.

20 spectively .Having thu's lescribed invention,what iwork and by thelocking shaft and engaged Icl'aim and desire to secure y Letters Patentby said bolt until the latter is moved out'of 1s a timing mechanismcontrolling the same, a transport safety device independently op posingthe action of both sald means and said mechanism and mounted to'fmovelongitud inall'y of .the fuse out of opposing relation gosuch parts byits own inertia at time of rin 2.1n a clock-work time-fuse having alocking-shaft rotating to.release a firing device and revented fromcompleting its rotation by t ecloc'k-work; atransport safety attachmentcontrolling both the movement of the cloc'kwork and the rotation of thelocking-shaft, consisting of a bolt movable lon' gitudinally of thefuse, and' arms carried reby. a rotary part of the clock- 1. In a timefuse having a firing means and the paths of the arms at the time offiring.

3. In a transport safety attachment for clock-Work time fuses, thecombination of a locking shaft holding the igniting spring un- 5 dertension, and rotating to release vsaid spring, and a securing device M,movable longitudinally of the fuse, under its own inertia, at timeoifiring, which, while in its securing position independentlyopposesboth the starting of the clock-work and the rotation of-thelocking shaft.

The foregoing specification signed at Berlin, this twenty-sixth day ofFebruary, 1906. CARL BAKER.

In presence of I'IENRY I'IASPER, VVOLDEMAR I'IAUPT.

